Pith Number

pith:GNMGH6PX

pith:2012:GNMGH6PXQLIEVG72ZOS2Q5LSJI

not attested not anchored not stored refs pending

SN 2011hw: Helium-Rich Circumstellar Gas and the Luminous Blue Variable to Wolf-Rayet Transition in Supernova Progenitors

Alexei V. Filippenko, Jeffrey M. Silverman, Jon C. Mauerhan, Kelsey I. Clubb, Michael Kandrashoff, Mohan Ganeshalingam, Nathan Smith, S. Bradley Cenko

arxiv:1204.0043 v1 · 2012-03-30 · astro-ph.SR · astro-ph.CO · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:57:59.845817Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

335863f9f782d04a9bfacba5a875724a0c8c9a7506dd977a431a3d247500f78f

Aliases

arxiv: 1204.0043 · arxiv_version: 1204.0043v1 · doi: 10.48550/arxiv.1204.0043 · pith_short_12: GNMGH6PXQLIE · pith_short_16: GNMGH6PXQLIEVG72 · pith_short_8: GNMGH6PX

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/GNMGH6PXQLIEVG72ZOS2Q5LSJI \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 335863f9f782d04a9bfacba5a875724a0c8c9a7506dd977a431a3d247500f78f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8afb0b8381c1a7bb8305a597545637e2f6316654ba570ea634b28ca8dfb95628",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-03-30T22:56:21Z",
    "title_canon_sha256": "2e8691864ef5dd56ebdf4bfa0975f973dd4618dd7a462d278810f9c285f82a6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0043",
    "kind": "arxiv",
    "version": 1
  }
}